diff --git a/miniprogram/pages/connectedDevice/connectedDevice.ts b/miniprogram/pages/connectedDevice/connectedDevice.ts
index e39a135..1f442e3 100644
--- a/miniprogram/pages/connectedDevice/connectedDevice.ts
+++ b/miniprogram/pages/connectedDevice/connectedDevice.ts
@@ -1,5 +1,6 @@
 import { lefuService } from '../../lefu/index'
 import type { ScannedDevice } from '../../lefu/index'
+import type { RawDevice } from '../../lefu/types'
 
 /** 展示用设备项（仅存入 setData，不含复杂对象） */
 interface DeviceItem {
@@ -21,6 +22,8 @@ Page({
         deviceList: [] as DeviceItem[],
         /** 防止权限弹框重入 */
         _modalLock: false,
+        /** 自动连接缓存设备的一次性标记，防止扫描回调反复触发 */
+        _autoConnectTried: false,
     },
 
     onShow() {
@@ -44,7 +47,7 @@ Page({
         console.log(TAG, 'onStartSearch, _modalLock:', this.data._modalLock)
         if (this.data._modalLock) return
         _rawDevices = []
-        this.setData({ status: 'searching', deviceList: [] })
+        this.setData({ status: 'searching', deviceList: [], _autoConnectTried: false })
         await this._checkPermissionAndScan()
     },
 
@@ -154,14 +157,51 @@ Page({
                 connected: d.name === connectedName,
             }))
             this.setData({ status: 'found', deviceList: list })
+
+            // 缓存设备命中：自动连接一次
+            if (this.data._autoConnectTried) return
+            const cached = wx.getStorageSync('connectDeviceInfo') as RawDevice | null
+            const cachedDeviceId = cached?.deviceId
+            if (!cachedDeviceId) return
+            const matchedIndex = devices.findIndex(d => d.raw.deviceId === cachedDeviceId)
+            if (matchedIndex < 0) return
+            console.log(TAG, '命中缓存设备, deviceId:', cachedDeviceId, 'index:', matchedIndex)
+            this.setData({ _autoConnectTried: true })
+            this._autoConnectByIndex(matchedIndex)
         })
         lefuService.startScan()
         console.log(TAG, 'lefuService.startScan() 已调用')
     },
 
-    /** 点击整张卡片：已连接 → 跳转配网页；未连接 → 走连接流程 */
+    /** 缓存设备自动连接（与 onConnect 共享连接流程） */
+    _autoConnectByIndex(index: number) {
+        const raw = _rawDevices[index]
+        if (!raw) return
+        wx.showLoading({ title: '连接中...', mask: true })
+        lefuService.stopScan()
+        lefuService.connect(raw.raw)
+        lefuService.onConnectState((state) => {
+            if (state === lefuService.BLUE_STATE.CONNECTFAILED) {
+                wx.hideLoading()
+                wx.showToast({ title: '连接失败，请重试', icon: 'none' })
+            }
+        })
+        lefuService.onDeviceConnect(() => {
+            wx.setStorageSync('connectDeviceInfo', { ...raw.raw, scaleDeviceName: raw.raw.name })
+            const list = this.data.deviceList.map((item, i) => ({
+                ...item,
+                connected: i === index,
+            }))
+            this.setData({ deviceList: list })
+            wx.hideLoading()
+            console.log(TAG, '缓存设备已自动连接（不跳转）')
+        })
+    },
+
+    /** 点击整张卡片：已连接 → 跳转配网页；未连接 → 走手动连接流程 */
     onTapCard(e: WechatMiniprogram.TouchEvent) {
         const connected = e.currentTarget.dataset.connected as boolean
+        console.log(TAG, 'onTapCard, connected:', connected)
         if (connected) {
             wx.navigateTo({ url: '/pages/connectedWifi/connectedWifi' })
             return
diff --git a/miniprogram/pages/connectedWifi/connectedWifi.ts b/miniprogram/pages/connectedWifi/connectedWifi.ts
index b4f0d38..9045918 100644
--- a/miniprogram/pages/connectedWifi/connectedWifi.ts
+++ b/miniprogram/pages/connectedWifi/connectedWifi.ts
@@ -1,25 +1,5 @@
 import { lefuService } from '../../lefu/index'
-import type { LeFuWifiItem, DeviceMember } from '../../lefu/index'
-
-/** 本地 userInfo 关键字段，用于下发主用户到新设备 */
-interface StoredUserInfo {
-    userId: string
-    realname: string
-    sex: number
-    height: number
-    birthday: string
-}
-
-/** 从生日字符串（YYYY-MM-DD）计算周岁 */
-const calcAge = (birthday: string): number => {
-    if (!birthday) return 0
-    const [y, m, d] = birthday.split('-').map(Number)
-    if (!y || !m || !d) return 0
-    const now = new Date()
-    let age = now.getFullYear() - y
-    if (now.getMonth() + 1 < m || (now.getMonth() + 1 === m && now.getDate() < d)) age -= 1
-    return Math.max(0, age)
-}
+import type { LeFuWifiItem } from '../../lefu/index'
 
 interface WifiItem {
     ssid: string
@@ -146,29 +126,6 @@ Page({
 
     onConfirm() {
         if (!this.data.hasConnected) return
-        // 已有 userInfo 表示是从首页/设备页添加新设备，需把主用户下发到新设备后回首页
-        const userInfo = wx.getStorageSync('userInfo') as StoredUserInfo | null
-        if (userInfo) {
-            const mainUser: DeviceMember = {
-                id: userInfo.userId,
-                name: userInfo.realname,
-                gender: userInfo.sex === 1 ? 1 : 0,
-                age: calcAge(userInfo.birthday),
-                height: userInfo.height,
-                isSelf: true,
-            }
-            wx.showLoading({ title: '正在下发主用户...', mask: true })
-            lefuService.syncMembersToDevice([mainUser])
-                .then(() => {
-                    wx.hideLoading()
-                    wx.switchTab({ url: '/pages/home/home' })
-                })
-                .catch((err: Error) => {
-                    wx.hideLoading()
-                    wx.showToast({ title: err.message || '主用户下发失败', icon: 'none' })
-                })
-            return
-        }
         wx.navigateTo({ url: '/pages/supplementPersonal/supplementPersonal' })
     },
 })